I'm still thinking the AMD Athlon II x3's and x4's are the best buys around. If you take comparable configurations from AMD and Intel, AMD wins easily. Here is what I'm talking about below:
AMD build w/AMD Athlon II x3 455 w/Asus 870 based mobo:
$89 for Athlon II x3 455
$90 for AMD mobo (Asus) w/6xSATA 3, 6 USB 2.0, 2 USB 3.0, 4 x DDR3 slots.
ASUS M4A87TD/USB3 AM3 AMD 870 SATA 6Gb/s USB 3.0 AMD Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131651
Intel build w/i3 550 w/P55 based mobo (Asus also):
$130 i3 550
$150-$10 MIRc Comparable mobo (Asus also) 6xSATA 3, 6 USB 2.0, 2 USB 3.0, 4 DDR3 slots.
ASUS P7P55D-E LX LGA 1156 Intel P55 SATA 6Gb/s USB 3.0 ATX Intel Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131634
**These are all Newegg prices**
AMD build (using the same Case/PSU/RAM/DVD parts in both systems)
$179 + shared parts.
Intel build (same parts shared w/AMD build)
$280 + shared parts.
This equals out to ~$100 price difference between the 2 builds, which to me is quite a bit!
So in general when trying to factor in "Value" for the gaming buck I still see the AMD based system being the better buy. Assuming your using mobo's with about the same features. If you notice the Intel based mobo's will cost you more for similar AMD based mobo's. This is where a lot of the value comes from AMD. Don't get me wrong here, the Intel based system is very good system too, you just have to pay more for them.